Amasirinji Alahlwayo Ezokwelapha anezakhiwo kanye nesakhiwo: Lo mkhiqizo wenziwe ngomgqomo, i-plunger, ipiston kanye nenaliti.Lo mgqomo kufanele uhlanzeke futhi ube sobala ngokwanele ukuze ubonwe kalula.Umgqomo nepiston kufanelana kahle futhi inendawo enhle yokushelela, futhi kulula ukuyisebenzisa.Umgqomo osobala kulula ukukwazi kahle i-volumn futhi umgqomo obala futhi kulula ukusula ibhamuza.I-plunger ihanjiswa kahle ngaphakathi komgqomo.
Umkhiqizo uyasebenza ukusunduza ikhambi emthanjeni wegazi noma we-subcutaneous, futhi ungakhipha igazi emzimbeni womuntu emithanjeni.Ifanela abasebenzisi beminyaka ehlukene futhi iyindlela eyisisekelo yokumnika.